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Published byFrederick Richards Modified over 9 years ago
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A drawing of the base of my house is below. I want to plant flowers around my entire house. How would I go about finding out how many flowers I need? (Each flower covers about 2 ft. from left to right).
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LEQ: How do we estimate area, perimeter, or circumference of an irregular figure?
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Perimeter: The sum of the side lengths of a polygon Area: The number of square units enclosed by a polygon What is a square unit?
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Perimeter= 4s (s=side length) Area=s 2
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Perimeter= 2L+2W Area=L(W)
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Circumference= 2 r, r=radius ◦ Or D , D=diameter, why? Area=πr 2
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Postulate 1-9: ◦ If 2 figures are congruent, then their areas are equal Postulate 1-10: ◦ The area of a region is the sum of the areas of its nonoverlapping parts.
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A carpeting specialist has to lay carpet in the room below. How many square ft. of carpet will he need? Ft.
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A circle has an area of 144 . What is the diameter? If a rectangle has a perimeter of 24 cm. and a length of 5 cm., what is the width?
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p. 56: 1-12, 32-40 p. 65: 8, 11, 26,37,38
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